A summer fare alert for Air France and KLM operated flights pricing at $521 to $526 round trip Los Angeles LAX to Basel, Switzerland at only $526 round trip, even for July departures. Best availability for departures is actually June to August dates, even though there are low fares starting Feb 19. Itineraries are one stop routing via either Amsterdam or Paris. Basel-Mulhouse BSL EuroAirport is about 2 miles northwest of Basel, Switzerland over the border in France and is a jointly operated French-Swiss airport.
Air France Los Angeles LAX – Paris CDG – Basel BSL – Amsterdam AMS – Los Angeles LAX
Delta ticket for Air France operated flights
Los Angeles LAX – Paris CDG – Basel BSL – Paris CDG – Los Angeles LAX